<template>
    <div class="header-wrapper">
      <!-- 折叠按钮 -->
      <div class="collapse-btn" @click="$emit('toggle-collapse')">
        <el-icon :size="20">
          <Expand v-if="collapse" />
          <Fold v-else />
        </el-icon>
      </div>
  
      <!-- 面包屑导航（可选） -->
      <el-breadcrumb class="breadcrumb-container" separator="/">
        <el-breadcrumb-item 
          v-for="item in breadcrumbs" 
          :key="item.path"
        >
          {{ item.meta.title }}
        </el-breadcrumb-item>
      </el-breadcrumb>
  
      <!-- 右侧功能区 -->
      <div class="right-menu">
        <!-- 全屏 -->
        <screenfull class="right-menu-item" />
  
        <!-- 用户头像 -->
        <el-dropdown>
          <div class="avatar-wrapper">
            <el-avatar 
              :size="30" 
              :src="userStore.avatar"
            />
            <span class="username">{{ userStore.name }}</span>
            <el-icon><arrow-down /></el-icon>
          </div>
          <template #dropdown>
            <el-dropdown-menu>
              <el-dropdown-item @click="handleUserCenter">个人中心</el-dropdown-item>
              <el-dropdown-item divided @click="handleLogout">退出登录</el-dropdown-item>
            </el-dropdown-menu>
          </template>
        </el-dropdown>
      </div>
    </div>
  </template>
  
  <script setup>
  import { computed } from 'vue'
  import { useRoute } from 'vue-router'
  import { useUserStore } from '@/stores/user'
  
  const props = defineProps({
    collapse: Boolean
  })
  
  const route = useRoute()
  const userStore = useUserStore()
  
  // 面包屑导航
  const breadcrumbs = computed(() => {
    const matched = route.matched.filter(
      item => item.meta && item.meta.title
    )
    return matched
  })
  
  // 退出登录
  const handleLogout = () => {
    userStore.logout()
    window.location.reload()
  }
  </script>
<style scoped>
.header-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #ffffff;
  padding: 0 20px;
  box-shadow: 0 1px 4px rgba(0, 21, 41, 0.08);
  height: 60px;
}

.collapse-btn {
  font-size: 20px;
  cursor: pointer;
  color: #333;
}

.breadcrumb-container {
  margin-left: 20px;
  flex-grow: 1;
}

.right-menu {
  display: flex;
  align-items: center;
}

.right-menu-item {
  margin-right: 20px;
}

.user-avatar-dropdown {
  margin-right: 30px; /* 增加一些空间 */
}

.avatar-wrapper {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.avatar-wrapper .el-avatar {
  margin-right: 8px;
}

.username {
  margin-right: 5px;
  font-weight: bold;
}

.el-icon.arrow-down {
  transition: transform 0.3s;
}

.avatar-wrapper:hover .arrow-down {
  transform: rotate(-180deg);
}

.user-center-link {
  margin-left: auto; /* 将用户中心链接推到最右边 */
  color: #409EFF;
  text-decoration: none;
  font-size: 14px;
  line-height: 60px;
  padding: 0 10px;
}

.user-center-link:hover {
  background-color: #ecf5ff;
  border-radius: 4px;
}
</style>